They are good 'Sometimes'!  
Once I ordered a condenser for my car  from Euro Car Parts' website and they sent me a used one. 
It wasn't cheap ,, it cost around £120 and they sent me an open box  item , caused me tremendous delays since I had to take the item back to one of their shops and had it excahnged , re-arrange with the mechanic to get it fitted . 
That was totally uncalled for should they had checke the order was right it the first place before sending it. 
Anyways, I still do by from Euro Carparts beacsue they are cheap.